CN108128633A - Powder storing bin equipped with auxiliary drawing mechanism - Google Patents
Powder storing bin equipped with auxiliary drawing mechanism Download PDFInfo
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- CN108128633A CN108128633A CN201810144098.6A CN201810144098A CN108128633A CN 108128633 A CN108128633 A CN 108128633A CN 201810144098 A CN201810144098 A CN 201810144098A CN 108128633 A CN108128633 A CN 108128633A
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- Prior art keywords
- positive
- negative pressure
- drawing mechanism
- delivery pipe
- valve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/28—Systems utilising a combination of gas pressure and suction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/34—Emptying devices
- B65G65/40—Devices for emptying otherwise than from the top
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/04—Bulk
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
A kind of powder storing bin for being equipped with auxiliary drawing mechanism, including the library and bottom storehouse, the upper surface of bottom storehouse is equipped with fluidized bar, feeding device is set in the gallery of bottom storehouse upper surface or bottom storehouse, the feeding device includes material delivery pipe, material delivery pipe is extended to outside library, further include auxiliary drawing mechanism, drawing mechanism is assisted to include dust-precipitator and positive-negative pressure integrated wind turbine, dust-precipitator is connected by negative pressure end of the connecting line respectively with the discharge end of material delivery pipe and positive-negative pressure integrated wind turbine, the positive pressure side of positive-negative pressure integrated wind turbine is connected by connecting line with the gas supply end of material delivery pipe；The purpose of the present invention is to provide a kind of simple in structure, applicability is more preferable, the more secure powder storing bin for being equipped with auxiliary drawing mechanism of discharging efficiency.
Description
Technical field
The present invention relates to storage facilities field more particularly to a kind of large-scale fluidisation powder storages for being used to store powder material
Library.
Background technology
At present, various large-scale fluidization storehouses are widely used in water because it has the characteristics that amount of storage is big, stability is good
The storage of the powder materials such as mud, flyash.Wherein, the Chinese utility model patent institute of such as Patent No. 201320336146.4
The pneumatic feeding device of filler bin (also referred to as material delivery pipe) of the conveying tubular type of record due to have simple in structure, energy consumption is small,
Be related to element is few, failure rate is extremely low, substantially without the remarkable advantages such as maintenance, safe and reliable in various large-scale fluidization storehouses
It is widely adopted in design and construction, typically for example recorded in the Chinese invention patent of Patent No. 201310231901.7
A kind of large size recorded in the Chinese invention patent of a kind of floor type powdery material storehouse and Patent No. 201310234506.4 is fallen
Ground formula fluidization storehouse etc. greatly improves the construction cost of large-scale fluidization storehouse and discharging efficiency.But found in practice, this
Feeding is realized in the dead weight that the pneumatic feeding device of class filler bin relies primarily on powder, for the powder of physics viscosity height, poor fluidity
Body material and the easy moisture absorption, the powder material with hydration activity, discharging efficiency are declined.In conclusion market is compeled
A kind of discharging will be provided efficiency is more secure, the better large-scale fluidization storehouse of applicability by being essential.
Invention content
It is an object of the invention to overcome drawbacks described above, provide a kind of simple in structure, applicability is more preferable, and discharging efficiency more has
What is ensured is equipped with the powder storing bin of auxiliary drawing mechanism.
The powder storing bin that the present invention is equipped with auxiliary drawing mechanism is achieved in that including the library and bottom storehouse, bottom storehouse it is upper
Surface is equipped with fluidized bar, and feeding device is set in the gallery of bottom storehouse upper surface or bottom storehouse, and the feeding device includes material conveying
Pipe, material delivery pipe are extended to outside library, additionally include auxiliary drawing mechanism, the auxiliary drawing mechanism is including dust-precipitator and just
Negative pressure integral blower, dust-precipitator by connecting line respectively with the discharge end of material delivery pipe and positive-negative pressure integrated wind turbine
Negative pressure end is connected, and the positive pressure side of positive-negative pressure integrated wind turbine is connected by connecting line with the gas supply end of material delivery pipe；It is described
At the lower section discharge nozzle of dust-precipitator compartment of terrain be equipped with the first blanking panel turnover valve and the second blanking panel turnover valve, the first blanking panel turnover valve with
It is connected between discharging tube chamber and dust-precipitator between second blanking panel turnover valve by pressure controlling pipeline, is set on pressure controlling pipeline
There are program-controlled triple valve, described program-controlled triple valve one end and atmosphere, in addition both ends are respectively by pressure controlling pipeline with gathering dust
Discharging tube chamber between device and the first blanking panel turnover valve and the second blanking panel turnover valve is connected.
Control is set on the connecting line that the positive pressure side of positive-negative pressure integrated wind turbine is connected with the gas supply end of material delivery pipe
The valve of gas flow and pressure.In addition, positive-negative pressure integrated wind turbine can also be used as the air source of fluidized bar simultaneously, only need
The positive pressure side of positive-negative pressure integrated wind turbine is connected by connecting line with the supply air line of fluidized bar.Certainly, in order to use
When it is easy to adjust, on the connecting line that can also be connected in the positive pressure side of positive-negative pressure integrated wind turbine with the supply air line of fluidized bar
The valve of setting control gas flow and pressure.In addition, for it is safe to use the considerations of, the both sides of positive-negative pressure integrated wind turbine connect
It takes over road and pressure gauge is set respectively, whether normal run to monitoring device.
It should be noted that heretofore described positive-negative pressure integrated wind turbine, refers to realize one end air-breathing simultaneously
It forms negative pressure, the other end to blow to form the flow-type wind turbine of positive pressure, such as roots blower etc., when work can generate higher
Negative pressure.In the present invention, the positive pressure air blowing by the use of positive-negative pressure integrated wind turbine helps air blowing source and fluidized gas as material delivery pipe
Source, while the high negative that using positive-negative pressure integrated wind turbine air-breathing when generates help to aspirate the powder material inside the library
It is delivered in dust-precipitator along connecting line to material delivery pipe, and then by powder material, finally utilizes program-controlled triple valve and two
A blanking panel turnover valve cooperation realizes that powder material is delivered to outside from dust-precipitator, completes a reclaiming process, so cycle weight
Multiple above-mentioned reclaiming process, that is, realize the powder outbound inside the library.Due in above-mentioned reclaiming process, in addition to utilizing powder thing
Outside its own gravity of material, also use the swabbing action generated during positive-negative pressure integrated blower fan work and carry out auxiliary discharging, therefore
The discharging efficiency of powder can be significantly improved；In addition, it is another advantage of the present invention that since the present invention is equipped with auxiliary discharging
Feeding device in the powder storing bin of device, dust-precipitator, positive-negative pressure integrated wind turbine and connecting line form relative closure
The circulatory system, air move in circles in this system, will not bring excess water, Ke Yiyou into the library from outside atmosphere
Effect avoids powder material in library from making moist and lump, and advantageously ensures that the mobility of powder material and intrinsic physical attribute, drops
Low materiel warehouse-out difficulty.
The present invention is equipped with the powder storing bin of auxiliary drawing mechanism by adding auxiliary drawing mechanism, during discharging, on the one hand profit
It is discharged with the gravity of powder material itself, on the other hand utilizes the negative pressure for assisting positive-negative pressure integrated wind turbine in drawing mechanism
Swabbing action carries out auxiliary discharging, compared with the traditional structure storage cavern that the gravity for relying on powder material itself merely discharges,
Discharging efficiency greatly improves, and especially suitable for physics viscosity height, the powder material of poor fluidity and the easy moisture absorption, has water
Change the powder material of activity, applicability is more preferable.
In conclusion the powder storing bin that the present invention is equipped with auxiliary drawing mechanism has that discharge that efficient, applicability is good etc. excellent
Point can be used for the storage of various powder materials.
Description of the drawings
Fig. 1 is one of structure diagram of powder storing bin that the present invention is equipped with auxiliary drawing mechanism.
Fig. 2 is the second structural representation for the powder storing bin that the present invention is equipped with auxiliary drawing mechanism.
Fig. 3 is the third structural representation for the powder storing bin that the present invention is equipped with auxiliary drawing mechanism.
Attached drawing identifies：1st, the library；2nd, bottom storehouse；3rd, gallery；4th, material delivery pipe；5th, mass flow control valve；6th, fluidized bar；
7th, supply air line；8th, dust-precipitator；9th, positive-negative pressure integrated wind turbine；10th, connecting line；11st, the first blanking panel turnover valve；12nd, second
Blanking panel turnover valve；13rd, discharge tube chamber；14th, pressure controlling pipeline；15th, program-controlled triple valve；16th, material transfer equipment；17th, valve；
18th, pressure gauge；19th, V-shaped groove；20th, negative pressure end；21st, positive pressure side；22nd, reduced pressure fluidized storehouse；23rd, blanking channel.
Specific embodiment
Embodiment one
As shown in Figure 1 the present invention be equipped with auxiliary drawing mechanism powder storing bin, including the library 1 and bottom storehouse 2, bottom storehouse 2 it is upper
Surface is equipped with fluidized bar 6, and fluidized bar 6 is connected with supply air line 7, and feeding device, the feeding are set in the gallery 3 in bottom storehouse 2
Device includes material delivery pipe 4, and material delivery pipe 4 is extended to outside library, and the discharge end of the material delivery pipe 4 outside library is equipped with object
Stream control valve 5, additionally includes auxiliary drawing mechanism, and the auxiliary drawing mechanism includes dust-precipitator 8 and positive/negative-pressure one
Formula wind turbine 9, dust-precipitator 8 are negative with the discharge end of material delivery pipe 4 and positive-negative pressure integrated wind turbine 9 respectively by connecting line 10
Pressure side 20 is connected, the gas supply end phase that the positive pressure side 21 of positive-negative pressure integrated wind turbine 9 passes through connecting line 10 and material delivery pipe 4
Even；At the lower section discharge nozzle of the dust-precipitator 8 compartment of terrain be equipped with the first blanking panel turnover valve 11 and the second blanking panel turnover valve 12, first
Pass through pressure controlling pipeline 14 between discharging tube chamber 13 and dust-precipitator 8 between 11 and second blanking panel turnover valve 12 of blanking panel turnover valve
It is connected, pressure controlling pipeline 14 is equipped with program-controlled triple valve 15, described program-controlled 15 one end of triple valve and atmosphere, in addition both ends
Pass through going out between pressure controlling pipeline 14 and 8 and first blanking panel turnover valve 11 of dust-precipitator and the second blanking panel turnover valve 12 respectively
Expects pipe chamber 13 is connected.To ensure the smooth outbound of powder material, blanking channel 23 and reduced pressure fluidized storehouse are also correspondingly provided in bottom storehouse
22。
The feeding course of work that the present invention is equipped with the powder storing bin of auxiliary drawing mechanism is as follows：Start positive-negative pressure integrated wind
Machine 9 is sent the air-flow that 9 positive pressure side 21 of positive-negative pressure integrated wind turbine is blown out to the gas supply of material delivery pipe 4 by connecting line 10
End as helps air blowing source and fluidisation air source, at the same time, 9 negative pressure end of positive-negative pressure integrated wind turbine, 20 air-breathing, connecting line 10,
The discharge end of dust-precipitator 8 and material delivery pipe 4 is respectively formed larger negative pressure, can be generated very when air-flow is by material delivery pipe 4
Strong suction effect is recycled in the close loop that air-flow is formed in above equipment and pipeline；It is fluidized bar by supply air line 7
6 gas supply, the collective effect of the swabbing effect generated when the gravity and air-flow of powder material itself recycle in close loop
Under, the powder material after the fluidisation of fluidized bar 6 swimmingly into reduced pressure fluidized storehouse 22 and can pass through blanking channel 23 into material
In delivery pipe 4, so positive-negative pressure integrated wind turbine 9 generate air-flow help blow under swabbing action along connecting line 10 enter receive
In dirt device 8；Under non-discharge state, program-controlled triple valve 15 and atmosphere on pressure controlling pipeline 14, discharging tube chamber 13 also lead to
Excess pressure regulates and controls pipeline 14 and atmosphere, is formd in dust-precipitator 8 when being worked due to positive-negative pressure integrated wind turbine 9 larger
Negative pressure, thus while there is powder material entrance in dust-precipitator 8, the first blanking panel turnover valve 11 will not stir discharging；When need from
When discharging in dust-precipitator 8, program-controlled triple valve 15 is adjusted, discharge nozzle chamber 13 is made to be kept by pressure controlling pipeline 14 and dust-precipitator 8
Connection, at this point, discharging tube chamber 13 is identical with the pressure in dust-precipitator 8, under the action of powder material gravity, the first blanking panel turnover
Valve 11 is opened, and the powder material in dust-precipitator 8 enters in discharging tube chamber 13, in the process, due to existing in discharging tube chamber 13
Larger negative pressure, the second blanking panel turnover valve 12 will not stir discharging；Adjust program-controlled triple valve 15 again, make discharge nozzle chamber 13 again with
Atmosphere, then the first blanking panel turnover valve 11 close rapidly, restore atmospheric pressure again in the tube chamber 13 that discharges, at this point, discharging
In tube chamber 13 under the gravity of powder material, the second blanking panel turnover valve 12 is opened, powder material from discharging tube chamber decline to
In material transfer equipment 16, the second blanking panel turnover valve 12 is automatically closed after powder material is fallen to the greatest extent, completes a feeding.According to above-mentioned
Process moves in circles, it is possible to be automatically performed powder material outbound.After feeding, supply air line 7 is first closed, is stopped to fluidisation
Stick 6 supplies, and turns off positive-negative pressure integrated wind turbine 9.In reclaiming process, it can be controlled by mass flow control valve 5
The discharging speed of material delivery pipe 4；Further, it is also possible to level-sensing device is set at dust-precipitator 8 and discharging tube chamber 13, to control out
Material opportunity；In addition, by being adjusted to program-controlled threeway valve frequency, the size of load can also be adjusted；Certainly, the first blanking panel turnover
The startup weight of valve and the second blanking panel turnover valve can be set according to feeding.
It should be noted that heretofore described positive-negative pressure integrated wind turbine, refers to realize one end air-breathing simultaneously
It forms negative pressure, the other end to blow to form the flow-type wind turbine of positive pressure, such as roots blower etc., when work can generate higher
Negative pressure.In the present invention, the positive pressure air blowing by the use of positive-negative pressure integrated wind turbine helps air blowing source and fluidized gas as material delivery pipe
Source, while the high negative that using positive-negative pressure integrated wind turbine air-breathing when generates help to aspirate the powder material inside the library
It is delivered in dust-precipitator along connecting line to material delivery pipe, and then by powder material, finally utilizes program-controlled triple valve and two
A blanking panel turnover valve cooperation realizes that powder material is delivered to outside from dust-precipitator, completes a reclaiming process, so cycle weight
Multiple above-mentioned reclaiming process, that is, realize the powder outbound inside the library.Due in above-mentioned reclaiming process, in addition to utilizing powder thing
Outside its own gravity of material, also use the swabbing action generated during positive-negative pressure integrated blower fan work and carry out auxiliary discharging, therefore
The discharging efficiency of powder can be significantly improved；In addition, it is another advantage of the present invention that since the present invention is equipped with auxiliary discharging
Feeding device in the powder storing bin of device, dust-precipitator, positive-negative pressure integrated wind turbine and connecting line form relative closure
The circulatory system, air move in circles in this system, will not bring excess water, Ke Yiyou into the library from outside atmosphere
Effect avoids powder material in library from making moist and lump, and advantageously ensures that the mobility of powder material and intrinsic physical attribute, drops
Low materiel warehouse-out difficulty.
The present invention is equipped with the powder storing bin of auxiliary drawing mechanism by adding auxiliary drawing mechanism, during discharging, on the one hand profit
Discharged with the gravity of powder material itself, on the other hand using positive-negative pressure integrated blower fan work in drawing mechanism is assisted when
The swabbing action of generation carries out auxiliary discharging, the traditional structure storage cavern to discharge with the simple gravity for relying on powder material itself
Compare, discharging efficiency greatly improves, especially suitable for physics viscosity is high, the powder material of poor fluidity and the easy moisture absorption,
Powder material with hydration activity, applicability are more preferable.
In conclusion the powder storing bin that the present invention is equipped with auxiliary drawing mechanism has that discharge that efficient, applicability is good etc. excellent
Point can be used for the storage of various powder materials.
Embodiment two
The present invention is equipped with the powder storing bin of auxiliary drawing mechanism as shown in Figure 2, and difference lies in bottom storehouses 2 with embodiment one
Upper heap is equipped with V-shaped groove 19, and fluidized bar 6 is set along the slope of V-shaped groove 19, and material delivery pipe 4 is arranged on V-shaped groove
19 bottom；In addition, supply air line 7 phase of the positive pressure side of positive-negative pressure integrated wind turbine 9 by connecting line 10 and fluidized bar 6
Even, it is supplied for supply air line 7；In addition, the discharge end of material delivery pipe 4 no longer sets material flow quantity regulating device, in connecting tube
The gas supply end of corresponding material delivery pipe 4 and supply air line 7 set control gas flow and the valve 17 of pressure respectively on road 10；The
Four, pressure gauge 18 is set respectively on the both sides connecting line 10 of positive-negative pressure integrated wind turbine 9.
Compared with embodiment one, in the technical solution described in this example, positive-negative pressure integrated wind turbine 9 is simultaneously material delivery pipe
4 and supply air line 7 supply, air source setting it is simpler；In addition, before supplying end and supply air line 7 by adjusting material delivery pipe 4
The valve 17 set respectively on portion's connecting line 10, can also control material delivery pipe 4 discharging speed；In positive-negative pressure integrated
Pressure gauge 18 is set respectively on the both sides connecting line 10 of wind turbine 9, the air pressure in air circulation system can be supervised at any time
Control, it is safe to use to ensure to carry out pressure adjusting at any time.
The feeding course of work of technical solution described in this example and the description in embodiment one are essentially identical, no longer heavy herein
Multiple, the difference lies in during, feeding, start positive-negative pressure integrated wind turbine 9 and can realize for material delivery pipe 4 and to fluidize simultaneously
Stick 6 supplies；Positive-negative pressure integrated wind turbine 9 is closed after feeding, operation is simpler.
It should be pointed out that the technical principle described in based on the embodiment of the present invention one and embodiment two, what the present invention was applicable in
The arrangement form of base structure and fluidized bar can be varied, such as shown in Fig. 3, is equipped with and assists out with the present invention shown in Fig. 2
Difference lies in bottom storehouse 2 uses the horizontal bottom storehouse of console mode to the powder storing bin of material device, and material delivery pipe 4 is placed in bottom storehouse upper table
Face, fluidized bar 6 are correspondingly arranged at beside the reduced pressure fluidized storehouse of material delivery pipe, can also be realized discharging effect well, are all bases
In the simple change of the technology of the present invention principle, all the present invention claims protection domain among.
Embodiment in the present invention only more preferably illustrates technical scheme of the present invention, should not be considered as the limit to the present invention
It makes, the technical characteristic in many of which embodiment can also cross-reference.It, can also be to above-mentioned reality based on the technology of the present invention principle
It applies the example technical solution to re-start combination or carry out simple replacement to some of which element using similar technique, as long as being based on
The present invention technical principle, all the present invention claims protection domain in.
Claims (5)
1. a kind of powder storing bin for being equipped with auxiliary drawing mechanism, including the library and bottom storehouse, the upper surface of bottom storehouse is equipped with fluidized bar, library
Feeding device is set in the gallery of bottom upper surface or bottom storehouse, and the feeding device includes material delivery pipe, material delivery pipe extension
To outside library, it is characterised in that further include auxiliary drawing mechanism, the auxiliary drawing mechanism includes dust-precipitator and positive-negative pressure integrated
Wind turbine, dust-precipitator pass through the connecting line negative pressure end phase with the discharge end of material delivery pipe and positive-negative pressure integrated wind turbine respectively
Even, the positive pressure side of positive-negative pressure integrated wind turbine is connected by connecting line with the gas supply end of material delivery pipe；The dust-precipitator
Compartment of terrain is equipped with the first blanking panel turnover valve and the second blanking panel turnover valve, the first blanking panel turnover valve and the second blanking at the discharge nozzle of lower section
It is connected between discharging tube chamber and dust-precipitator between flap valve by pressure controlling pipeline, pressure controlling pipeline is equipped with program-controlled three
Port valve, described program-controlled triple valve one end and atmosphere, in addition both ends pass through pressure controlling pipeline and dust-precipitator and the respectively
Discharging tube chamber between one blanking flap valve and the second blanking panel turnover valve is connected.
2. the powder storing bin according to claim 1 for being equipped with auxiliary drawing mechanism, it is characterised in that positive-negative pressure integrated wind
Setting control gas flow and the valve of pressure on the connecting line that the positive pressure side of machine is connected with the gas supply end of material delivery pipe.
3. the powder storing bin according to claim 1 for being equipped with auxiliary drawing mechanism, it is characterised in that positive-negative pressure integrated wind
The positive pressure side of machine is connected by connecting line with the supply air line of fluidized bar.
4. the powder storing bin according to claim 3 for being equipped with auxiliary drawing mechanism, it is characterised in that positive-negative pressure integrated wind
Setting control gas flow and the valve of pressure on the connecting line that the positive pressure side of machine is connected with the supply air line of fluidized bar.
5. the powder storing bin for being equipped with auxiliary drawing mechanism according to any claim in claim 1-4, feature exist
In setting pressure gauge respectively on the both sides connecting line of positive-negative pressure integrated wind turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810144098.6A CN108128633A (en) | 2018-02-12 | 2018-02-12 | Powder storing bin equipped with auxiliary drawing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810144098.6A CN108128633A (en) | 2018-02-12 | 2018-02-12 | Powder storing bin equipped with auxiliary drawing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108128633A true CN108128633A (en) | 2018-06-08 |
Family
ID=62430878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810144098.6A Withdrawn CN108128633A (en) | 2018-02-12 | 2018-02-12 | Powder storing bin equipped with auxiliary drawing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108128633A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113699854A (en) * | 2021-09-10 | 2021-11-26 | 洛阳腾飞建材有限公司 | Asphalt concrete production equipment |
-
2018
- 2018-02-12 CN CN201810144098.6A patent/CN108128633A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113699854A (en) * | 2021-09-10 | 2021-11-26 | 洛阳腾飞建材有限公司 | Asphalt concrete production equipment |
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Application publication date: 20180608 |
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